gistfile1.rb

  def build_weights
    twitter_weights.destroy_all
    Variable.all.each do |var|
      Scheme.all.each do |scheme|
        hash  = tweets_of_followers.send(var.name)
        total = hash.values.sum
        hash.each do |key,val|
          twitter_weights.create(
            :scheme   => scheme,
            :variable => var,
            :value    => key,
            :weight   => (val/total.to_f)
          )
        end
      end
    end
  end